So, interestingly enough, researchers in Columbia and Harvard decided to study the effects of power posturing, you know, the body language of that obnoxious fratboy of a bossman character in your work place. It's the body language that takes up a lot of space: the obnoxious coach in Glee establishes her authority over everyone by planting both hands on the table and looming forwards; various pictures of presidents show them with their feet on the table and elbows behind their heads (that's not Obama relaxing, that's him establishing power over his staff); countless bouncers with their hands on their hips, elbows pointing out to their sides, and legs rooted in a power base. Yeah, you know those postures. (If you are reading this blog, you must be that nerd on the receiving end of the power postures.)So what did they find out? Same deal as the smile study. People assuming power postures felt more in power. AND testosterone levels of subjects—regardless of gender—went up while cortisol levels (the stress-related hormone) went down within moments of assuming the power postures. Incidentally, people in power have lower level of cortisol (probably because they're busy raising everyone else's).
On the flip side of the coin, taking submissive postures, which entails making yourself seem smaller (slouching, slumping shoulders, looking vulnerable, hugging self and crossing ankles), resulted in lower testosterone and higher cortisol levels.
So the lesson is, act like a bully. You'll feel good about it later. It's also a great way to build up your confidence right before a tough meeting, an interview, or your next mime performance before a large audience.
